In a chilling coincidence, sophomore Kathleen Roskot was slain just a block from the apartment where 26-year-old Columbia Law School student Lynda Hong was killed in 1998.

Police charged Hong’s ex-boyfriend with slashing her throat with a knife, but he pleaded not guilty and blamed another of his girlfriends. Roskot’s throat also was slashed with a knife, and her boyfriend was fingered in the slaying.

Police said Hong’s boyfriend, Edmund Ko, 23, who was unemployed, dated Hong when both were undergraduates at Cornell University.

Ko still awaits trial.

Friends called Ko a golden boy. He was tall and handsome and the heir apparent to a South Korean industrialist’s fortune.

Hong was the immigrant parents’ dream.

She was an impeccably dressed go-getter whose intellect and steely nerves landed her a job at a major Manhattan law firm.

Ko and Hong fell in love when she was a senior and he was a sophomore at Cornell.

In 1996, Ko was hired by Macy’s for its executive trainee program. Six months later, he was promoted to associate buyer.

Then his life began to unravel.

Ko and Hong broke up and he began dating an escort at a club that catered to Korean clientele.